Effect of Cu and Li substitution on the piezoelectric properties of potassium sodium niobate lead-free ceramics

Author

Li, Enzhu ; Kakemoto, Hirofumi ; Wada, Satoshi ; Tsurumi, Takaaki

Author_Institution

Tokyo Inst. of Technol., Tokyo

fYear

2007

fDate

27-31 May 2007

Firstpage

643

Lastpage

644

Abstract

Recently, (K, Na) NbO₃ (KNN) ceramics and, based on KNN, (K,Na,Li) NbO₃ ceramics, (K,Na,Li)(Nb,Ta,Sb)O₃ (LF4) perovskite ceramics were reported to show excellent piezoelectric properties and has been regarded as candidates of lead-free piezoelectric materials. In this study, the effect of CuO addition to Li-modified KNN were investigated. The CuO-doping changed it to "hard" piezoelectric ceramics but the Q_m can be improved to above 400 for Li-modified KNN with a high piezoelectric constant d₃₃ of 100 pC/N.

Keywords

doping; piezoceramics; piezoelectricity; potassium compounds; sodium compounds; CuO-doping; KNbO₃-NaNbO₃; perovskite ceramics; piezoelectric ceramics; piezoelectric constant; piezoelectric properties; potassium sodium niobate lead-free ceramics; Bioceramics; Biomedical engineering; Ceramics; Dielectrics; Electric variables measurement; Environmentally friendly manufacturing techniques; Lattices; Niobium compounds; Resonance; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on

Conference_Location

Nara

ISSN

1099-4734

Print_ISBN

978-1-4244-1334-8

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2007.4393355

Filename

4393355